A system for preparing 3-hydroxypropionaldehyde from acrolein hydration and a method for preparing a catalyst

By preparing the V-Mo-X-SPAO-34 catalyst and applying it in a 1-4 stage series reactor, the problems of low conversion rate and low selectivity of existing catalysts were solved, and the efficient preparation of 3-hydroxypropional by acrolein hydration was achieved, which is suitable for industrial production.

CN117884172BActive Publication Date: 2026-06-12TIANJIN HAICHENG ENERGY ENG TECH CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
TIANJIN HAICHENG ENERGY ENG TECH CO LTD
Filing Date
2024-01-11
Publication Date
2026-06-12

AI Technical Summary

⚠Technical Problem

Existing catalysts for the hydration of acrolein to prepare 3-hydroxypropional suffer from problems such as low conversion rate, low selectivity, low yield, difficulty in separation, and severe loss.

⚗Method used

A novel catalyst preparation method was adopted, which involves mixing a template agent, an aluminum source, a phosphorus source, a silicon source and a metal salt solution and then heating the mixture to form an intermediate catalyst. The intermediate catalyst was then mixed with polyethylene glycol, citric acid and silica sol, dried and calcined to prepare a V-Mo-X-SPAO-34 catalyst. The catalyst was then used in a 1-4 stage series reactor for the acrolein hydration reaction.

🎯Benefits of technology

It improves the conversion rate and selectivity of acrolein hydration to 3-hydroxypropional, simplifies the catalyst preparation process, reduces costs, and has mild reaction conditions with few byproducts, making it suitable for large-scale industrial production.

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Abstract

The application provides a system for preparing 3-hydroxypropionaldehyde by hydrating propenal and a preparation method of a catalyst, and comprises the following steps: S1: mixing a template agent, an aluminum source, a phosphorus source and a silicon source, adding a vanadium salt, a molybdenum salt and a salt solution of metal X, and obtaining an intermediate catalyst after heating and treatment; S2: mixing the intermediate catalyst, polyethylene glycol, citric acid and silica sol, and obtaining a formed V-Mo-X-SPAO-34 catalyst after drying and calcining. The application has the beneficial effects that: the catalyst prepared in the application has relatively mild reaction conditions in the reaction of preparing 3-hydroxypropionaldehyde by hydrating propenal, the process is simple, the generated by-products are few, and the catalyst is beneficial to large-scale continuous industrial production.
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